Latias #HGSS10 from HGSS Black Star Promos is a reverse holo promo card that currently sells for about $29.99 ungraded, with graded copies ranging from $60.00 at grade 7 to $463 at grade 10. A grade 10 copy sells for around $463, about 15× the $29.99 raw price, so high-grade copies are worth grading.